dennis
A bit hesitant in buying this lens. I already have the 14-24, 24-70 and 70-200. My biggest thing was lugging that 70-200 around and only using it for maybe a few shots while traveling. For my uses I dont care that this lens isnt f/2.8. This lenses is so much lighter and compact then the 70-200. Against the 24-70 it is shorter and just slightly lighter. When zooming from 24-120, it has external zoom. You will pick up an extra 2 inches in length. It does have VR which the 24-70 does not. The VR works quite well. I did test this lens against my 24-70 but only at the 24mm focal length. I used my D810 on a tripod for both lenses and shot at f/16-f/20 with no remote shutter release. VR was turned off on the 24-120. I used ACR 8.7 to view the shots. At 100% both lenses are super close in sharpness. So close its indistinguishable. Above f/16 both lenses had an insignificant amount of diffraction. No news there. Both lenses had slight distortion at 24mm but this can be corrected fast & easy in ACR. I found that at 120mm, f/5 was better over f/4. You still get nice bokeh at f/5 and whatever you auto-focused on is very sharp. I would say this is a very good buy for the money. Who knows, maybe after shooting more with it I will get rid of the 24-70.